A Blue Instant Evo is in Teklovossen's banish and the opposing Nuu has already activated her Instant.
Nuu declares to play the Blue Instant Evo in Teklovossen's banish. If it resolves, it would simply fail to effect and would go straight to the graveyard since Nuu doesn't wear any Base. This is useful for Nuu since it would take Teklovossen a card with a Scrap keyword to put it back into banish.
To get a successful transformation, Evo cards require that you have the corresponding Base card equipped. You can still play Evo cards even if you don’t have the Base equipped - but nothing will happen and the Evo will go to the graveyard.
https://fabtcg.com/articles/rules-reprise-17-bright-lights/
Would it be possible to for Teklovossen to play that same Evo as an Instant before it resolves for Nuu?
if there's a problem with the question, by all means, i'm all ears.
cost." before any player can gain priority